Hapytrip 12 Volt USB Outlet Dual Quick Charge 3.0 Port and PD3.0 USB C Car Battery Chargers Socket, Waterproof 12V Power Outlet Cigarette Lighter Replacement DIY Kit with Voltmeter and Switch for Boat - 06P

• Dual QC 3.0 + 1 PD USB Port: Dual USB Quick Charge 3.0 ports and one PD3.0 USB C connector can charge up to three devices at the same time at the fastest possible speed, and the multi-port design can meet your needs. Blue Soft Light Voltage Display: Equipped with a soft light digital voltage display, it can accurately display the voltage status of your car battery in real time, preventing problems caused by low voltage and ensuring driving safety. Energy Saving Switch: Push-button switch controls the LED voltmeter and all charging USB ports, ensuring that the charger will not continue to consume your car battery when it is idle, saving energy. Excellent Quality: The charger socket case is high quality ABS plastic, it will not get hot. The built-in smart chip enables each port to intelligently identify your device and maximize charging speed. And the built-in protection prevents overcurrent, overheating and overcharging. Wide Compatibility: This USB C socket is suitable for all 12V-24V cars, marine, motorcycles, golf carts, ATVs, RVs and more. Supports all cell phones, tablets, video game controllers, mobile power, and other USB-A and USB-C charged electronic devices. Easy installation: You can replace your car's original cigarette lighter socket with this USB charger. Or, you can DIY the installation by drilling a 1.18 inch/3cm hole, inserting the charger and tightening the ring, then connecting the positive and negative wires（Red wire to Silver plug(+), Black wire to Golden plug(-) ）. See the pictures for detailed installation instructions. Please note: The bottom of the product is marked with "+" and "-", the red line connects to +, the black line connects to -. if the connection is reversed, it will not be energized.